Review on 📐 Tenhulzen Automotive - High-Precision Digital Hands-Free Camber/Caster Gauge, Accurate to 0.1 Degrees, No Turn Plates Required! by Edgar Clark

The instrument has to move so much during the measurement that the Freehand option is practically unusable. Adding a 15 degree angle to both ends of the lower strut allows the transducer to stay in place when measuring caster. This setup only has a 15 degree angle at the top of the sensor, forcing you to shoot and point in the right direction to get wheel angle.